Radio extension conductor and reel



. 1,62 ,5 2 March 8 1 927. w. I. LIGHT 0 6 RADIO EXTENSION CONDUCTOR ANDREEL Filed Aug. 51, 1925 ATTORNEYS @Mw/ Y BWZ terial of any PatentedMar. 8, 1927.

WILLIAM I. LIGHT, OF. BROOKLYN, NEW YORK.

RADIO EXTENSION CONDUCTOR AND REEL.

Application filed August 31, 1925. Serial No. 53,707.

This invention relates to a simple and eificient extension conductor andreel for radio sets so that the loud speaker or head phone can beConnected to a radio set easily and simply at some distance therefrom.

' An object of the invention is to provide a suitable length of theconductor wh1ch can be Wound up in the casing of a reel and when it isdesired to be used can permit the extension of the conductor to any 7desired length and to a point where a loud speaker plug can be connectedto a portion of the reel.

The invention is illustrated in the drawing of which Figure 1 is anelevation of the extension device in use in connection with a radiosetand a loud speaker;

Figure 2 is a section through the reel;

Figure 3 is a side section through the reel;

Figure 4 is a side elevation of the reel;

Figure 5 is a cross section through the e tension conductor.

he form ofthe invention shown ,in the drawings is a preferred form,although it is understood that modifications in the construction andarrangement of theparts and in the character of the materials used maybe adopted without departing from the spirit of the invention as setforth in the appended claims.

In its general aspect the invention comprises a casing having arotatable hollow hub on which a flat strip of insulatin madesired lengthis woun in --a manner similar to the manner in'which a surveyor tape iswound up. These insulated strips contain the two electrical conductorssuitably embodied therein.

The inner end of the strip is connected to the rotatable hub and theinner ends of the conductors are connected to terminals dis posed withinthe hollow hub of the reel. The other end of the strip and theconductors are connected to a plug adapted to be connected to the radioset. In this main ner the plug on the end of the strip can be connectedto a radio set and the strip unwound from the reel the desired amountand then a plu from a loud speaker inserted into the si e of the hollowhub to automatically make connection with the conductor, by means of theterminals within the hub.

In the preferred form of the invention I show a casing ,10, having arotatable hub portion 11, adapted to be rotated by a hanconductor 17 isembedded in this strip 16 and its inner end is connected to a springterminal '18, which is mounted on the plate 13 but insulated therefrom bsuitable-insulating washers, such as 19, s own in Figure 2. Theinsulating strip 16 is of any desired length and the conductors 15 and17 at the outer end of the strip extend therebeyond and are connected toa plug 20,'which maybe inserted into any standard radio set providedwith means to receive a plug.

A plug 21 connected to a cord 22 leadng to a,loud speaker 23 may beinserted into an aperture, such as 24 in the side of the hub 11, and inthe usual manner make contact with the terminals 14 and 18. The end ofthe plug makes direct contact with the terminal 18, and the body of theplug makes contact with the terminal 14 through the intermediary of themetallic plate 13.

It will thus be apparent that this simple device will keep the extensionconductor Wound up in a simple and eificient manner at all times whennot inuse so that it will not, in the usual manner, become all snarledup. This in itself is a great advantage in addition to the fact a greatlength of conductor can in this way be employed to better advantage andmake it possible to dispose a loud speaker at any suitable point fromthe radio set without regard to its reasonable distance from the set.

What I claim is-:-

1. A radio extension conductor and reel, comprising a casing, arevoluble hollow hub in the casing and provided with terminals therein,said hub havinga central opening, a strip having conductors embeddedtherein, the strip having one end secured to the hub and its conductorsto the terminals, the other end of the strip and its conductors beingsecured to a plu adapted to be connected to a radio set, an a cordadapted to have one end secured to a loud speaker and provided at itsother end with a plug adapted to be mamas inserted in the openin of thehub and make secured to the terminals, the other end of contact with theterminals. the strip and its conductors being secured 2. A radioextension conductor and reel, to a plug adapted to'be connected with a15 comprising a casing, a revoluble hollow hub radio set, and a cord forconnection with a in the casing, the hub having a central openloudspeaker provided with a plug adapted ing, in one side and provided onthe inner to be inserted through the registering openface of said sidewith a metal plate having ings of the hub and metallic plate to make anopening'registering with the opening of direct contact with the springterminal and 2 the hub, a terminal on said plate, a spring contact withthe other terminal through said terminal also on the plate, a striphaving metallic plate. conductors embedded therein and having one endsecured to the hub and its conductors LLIAM I. LIGHT.

